Regulatory Network Research Unit

1) Dissection of signaling cascades in plant response to potassium
Our unit aims to elucidate the components of plant potassium sensing and deficiency signaling in Arabidopsis using various approaches.
2) Development of new methods for radiocesium remediation and analyses of regulatory components for phytoremediation
In order to develop efficient phytoremediation system for radioactive cesium in Fukushima area, we aim to develop plants which selectively and more (less) efficiently absorb cesium from contaminated soil. In addition, chemical screenings to elucidate the chemicals which affect cesium uptake in plants has been conducted. From the results obtained, the regulatory components of cesium uptake in plants are being studied.
3) Development of rice with improved nitrogen-use efficiency and elucidation of regulatory mechanisms of plant nutrient utilization
Nitrogen (N) is the major nutrient for plant growth, and lack of N has entailed increased use of N fertilizers. However, increased fertilizer usage does not result in comparable production increase. Furthermore, excess fertilizer run-off creates soil pollution, and growing ecological awareness necessitates new solutions to increase agricultural production without endangering the environment. Another pressing matter is the achievement of food security via sustainable agriculture. As one solution to these issues, we aim to develop rice plants that grow well under nitrogen-limited conditions and efficiently utilize other macronutrients.

Research Fields

Biology & Biochemistry / Molecular Biology & Genetics / Agricultural Sciences / Plant & Animal Science / Environment & Ecology

Research Subjects

• Dissection of signaling cascades in plant potassium sensing and signaling
• Development of new methods of radiocesium remediation and analyses of regulatory components of phytoremediation
• Development of rice with improved nitrogen-use efficiency and understanding regulatory mechanisms of plant nutrient utilizations

Publications

1. Eri Adams, Parisa Abdollahi, Ryoung Shin*.
   "Cesium inhibits plant growth through jasmonate signalling in Arabidopsis thaliana"
   Int. J. Mol. Sci. 14: in press (2013).
2. Youn Jeong Nam, Lam-Son Phan Tran, Rie Nishiyama, Mikiko Kojima, Hitoshi Sakakibara, Ryoung Shin*.
   "Regulatory roles of cytokinins and cytokinin signaling in response to potassium deficiency in Arabidopsis."
   PLOS One 7(10):e47797 (2012).
3. Min Jung Kim, Daniel Ruzicka, Ryoung Shin, Daniel P. Schachtman.
   "The Arabidopsis AP2/ERF transcription factor RAP2.11 modulates plant response to low nutrient conditions."
   Mol. Plant 5:1042-1057 (2012).
4. Celine Diaz, Miyako Kusano, Ronan Sulpice, Araki Mitsutaka, Henning Redestig, Kazuki Saito, Mark Stitt, Ryoung Shin*.
   "Determining novel functions of Arabidopsis 14-3-3 proteins in central metabolic processes."
   BMC Syst. Biol. 5:192 (2011).
5. Vadim Demidchik, Zhonglin Shang, Ryoung Shin, Sergey Shabala, Julia M. Davies.
   "Receptor-like activity evoked by extracellular ADP in Arabidopsis thaliana root epidermal plasma membrane."
   Plant Physiol. 156:1375-1385 (2011).
6. Ryoung Shin*.
   "Transcriptional regulatory components responding to macronutrient limitation."
   J. Plant Biol. 54:286-293 (2011) (Review paper).
7. Ryoung Shin*, Joseph M. Jez, Amarjit Basra, Bei Zhang, Daniel P. Schachtman.
   "14-3-3 Proteins fine-tune plant nutrient metabolism."
   FEBS Lett. 585:143-147 (2011).
8. Ryoung Shin, Adrien Y. Burch, Kari A. Huppert, Shiv B. Tiwari, Angus S. Murphy, Tom J. Guilfoyle, Daniel P. Schachtman.
   "The Arabidopsis transcription factor MYB77 modulates auxin signal transduction."
   Plant Cell 19: 2440-2453 (2007). (Selected by Faculty of 1000)
9. Daniel P. Schachtman, Ryoung Shin.
   "Nutrient sensing and signaling:NPKS."
   Annu. Rev. Plant Biol. 58: 47-69 (2007) (Review paper).
10. Ryoung Shin, Sophie Alvarez, Adrien Y. Burch, Joseph M. Jez, Daniel P. Schachtman.
    "Phosphoproteomic identification of targets of the Arabidopsis sucrose nonfermenting-like kinase SnRK2.8 reveals a connection to metabolic processes."
    Proc. Natl. Acad. Sci. U.S.A. 104: 6460-6465 (2007).